solve the following equations explaining the properties you have used to solve each equation. show your work.

1. 3x-7=21,5
2. 3/4y-2 =10
3. 5/12t+3+1/3t=t-21
4. 0,25xsquared+1,5=1,25x
5. 0,2psquared+1,4p=-1,2​